Water-tube boiler.



PATENTED OCT. 9, 1906.

J. R, BROWN 80K. PARK:

WATER TUBE BOILER= APPLICATION FILED JUNE 12, 1905.

3 SHEETS-SHEET 1.

mag;

No. 832,591. PATENTED OCT. 9, 1906.

J. R. BROWN & K..PARK.

WATER TUBE BOILER.

APPLICATION FILED JUNE 12, 1905.

3 SHEETS-SHEET 2 WITNESSES m ENVENTORS No. 832,591. PATENTED 001". 9; 1906. J. B. BROWN 6; K. PARK WATER TUBE BOILER.

APPLICATION FILED JUNE 12, 1905.

3 SHEETS-SHEIJT 3.

' INVEN RS WITNESSES k Aw, am? WW /f2: Jalwt'l/ x in clusters of four each.

illlllTEfi STATS rarnn'r v sion WATER-TUBE sodas.

Specification of Letters Patent.

Patented Oct. 9, 1906.,

Application filed June 12, 1905 Serial No. 264,774.

To aZZ whom it may concern:

Be it known that we, JOHN ROWLAND BROWN and KENNEDY PARK, of Mansfield, Richland county, Ohio, have invented a new and useful Water-Tube Boiler, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which Figure l is a vertical longitudinal section of our improved. boiler on the line I l 01 Fig. 2'. F 2 is a cross-section. on the line H H of 1 and Fig. 3 is broken plan view, partly in section, showing the roof-battle ar rangeinent.

Our invention relates to that class of boilers wherein front and rear headers are connected by inclined watervtubes, and is designed to provide an improved arrangement of the boiler wherein the water-tubes are provided with bafliing arranged to fully extract the heat of the gases.

The further object of the invention is to provide a simple construction which may be cheaply and easily made and. not liable to get out of order.

In the drawings, 2 represents the 'front headers, and 3 the rear headers. These headers preferably extend vertically and are provided with zigzag inner faces which are substantially at right angles to the axes of the water-tubes. The headers are prefer ably of sinuous form, as shown in Fig. 3, though the exact form and arrangement of the headers may be varied without departing lronrour invention. The lower ends of the headers are connected by the large watertubes l, while .abcve this horizontal row the smaller water-tubes are arranged, preferably, Each cluster of four is expanded in suitable tube-seats in the headers, the headers being provided with. hand-holes opposite each group.

Between the lower row of large tubes and. the next rows of smaller tubes we provide a battle 5, which preferably consists of fire brick fitting on and between the larger tubes, shown in Fig. 2. This baffle extends from the front of the furnace-chamber to an inter mediate part of the tubes, its length being varied as desired, according to the character of combustible used. From near the inner end of this baffle arises a vertical cross-baffle 6, which consists of lire-brick fitted between the tubes and preferably extends the entire height of the tubes at this point in their same as the angle of the water-tubes.

length. The gases are therefore compelled to pass upwardly across the rear portions of all of the water-tubes before they are allowed to pass forwardly. The upper ends of the rear headers 3 are provided with vertical faces and connected by the tubes 7 with the front transverse steam andwater drum 8, which is connected to the front headers by nipples or tubes 9. Above the tubes 7 and lying on them is a top baffle or roof 10, of firebrick, which extends entirely across the rear ortions oi the tubes and forwardly to the line of the vertical baiile 6. In front of this plane of the vertical bafile the root or baffle 10, which is an extension of the baffle 10, extends over the central rows of tubes between the vertical longitudinal baiiles 11 11. These ballies 11 extend longitudinally of the tubes from intermediate points in the width of the ballle 6. They project forwardly from the ball'le 6 to'the front headers and extend downwardly only a part of the depth of the water-tubes. The side portions of baffle-6 extend to the roof l0, while its portions between the baflles l1 stop above the tubes and leaves a central opening leading forward below the roof. The vertical depth of these bailies may be varied as desired, and the gases which enter the front portion of the boiler through the space or opening 12 in baflie 6 are compelled to flow downwardly under the bailie l0 and between the bellies i 1 until they reach the lower ends of these battles 11. The gases then divideand flow sidewise into the spaces outside the bailles 1 1 whence they rise and pass upwardly to the transverse flue 13, which is connected to the stack.

We have shown the front headers as nippled into a rectangular mud-drum 14, extending transversely above the firing-doors and provided with blow-oils at its ends. We have also shown the combustion-chamber as arranged for the burning of oil. Thus'the are 15 support a fire-brick flooring 16, which extends upwardly and rearwardly at an angle which is preferably substantially the The burners project through the front doors and are preferably arranged horizontall so that their flames strike the fire-brick cor at a point intermediate of its length. If gratebars are used for solid fuel, they will prefer ably be arr anged insimilar manner, being in-' clined rearwardly and upwardly corres 0nding to the angle of the tubes. To supply additional air to the combustion-chamber, we

underneath the bafiie 5 and thence upwardly across the rear portions of .all of the watertubes. The gases then converge into the space between the upper water-tubes and the upper bafile l0 and flow forwardly between. the baflies 11 and under the roof 10. They then flow downwardly among a portion of the water-tubes until they reach the lower ends of the longitudinal baffles 11 and then divide and flow upwardly through the opposite portions of the side tubes, whence they flew into the ofitake and to the stack.

The advantages of iour invention result from the peculiar arrangement of thebaiile, which provides the passing of the gases over all of the'water-tubes, while dividing the gases under the upward flow and causing them to flow laterally before they pass upover the water-tubes in their last upward pass. We have shown the boiler as having the firingdoors at the lower ends of the inclined tubes. Within the scope of our broader claims, however, the boiler may be fired at the other end-i.'e., beneath the higher ends of the tubes.

Havin thus described the invention, what ters Patent,'is-

1. A water-tube boiler having front and rear headers connected by inclined watertubes, a substantially horizontal baffle ex tending from one end of the furnace-chamber for a part efthe length of the tubes adjacent the bottom of the series of tubes, a vertical bafi'le extending across the tubes near the in nor end of the horizontal bafiie and rising therefrom, a roof extending over the end portions of the tubes beyond the horizontal baffle, and succeeding baffles arranged to pass the ases downwardly and thence downwardl y and upwardly over the end portions of the tubes, the gases bein divided in one of the last passes; substantial y as described.

2. A water-tube boiler having front and rear headers connected by inclined watertubes, a substantially horizontal baflie extending over a portion of the furnace adjacent the bottom of the series of tubes, a vertieal cross-bafiie. extending upwardly from the inner portion of the horizontal baflie, a roof extending over the tubes and having an If the air is allowed to en- The rear portion of the outlet or outlets to the stack-flue, longitudi-.

nal baffles extending from the cross vertical baflle for a part of the depth of the watertubes, and an upper horizontal baflie or baffies extending from the vertical crossbafii to the ends of the tubes and compelling t h gases to divide and flow sidewise among the water-tubes before they rise to the stack; substantially as described.

3. A water-tube boiler having front and rear headers connected b inclined rows of water-tubes, a horizontal baffle extending over at least one row of water-tubes and from the ends of the tubes to a point intermediate their length, a vertical cross-baffle extending from the end of the horizontal bafii'e across the entire rows of inclined tubes, tubes extending from the headers at one end to a transverse steam and water drum at the other end, a roof or bafile over the last-named tubes and having an exit or exits to the stack, vertical longitudinal baflies extending from intermediate points in the vertical crossbaflle to one end of the tubes, and an u per bathe or baffles beneath the oi'l'take an arranged to cause the gases to divide and flow laterally as they pass over the end portions of the tubes to the stack; substantially as deextending upwardly from the inner end of the lower baffle, a roof over the tubes having outlets to the stack, and longitudinal vertical baffles extending forwardly from the vertical cross-baffles and depending a part of the depth of the tubes, the gases dividing and flowing laterally in front of the vertical crossbafile and over the end portions of the water tubes as they rise to the stack; substantially as described.

5. A water-tube boiler having front and rear headers connected by inclined watertubes, a lower horizontally-extending ba'flle, intermediate cross-bathe having an opening or openings in its upper portion, a roof across the top of the tube-chamber having an opening or openings to the stack, and longitudinally-extending vertical baffles arranged to cause the gases to divide and flow laterally before they rise to the stack; substantially as described.

6. A water-tube boiler having front and rear headers connected by inclined water.

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openings to allow the divided currents of gases to flow upwardly to the stack; substantially as described.

7. A Water-tube boiler having front and rear headers, Water-tubesconnecting the headers, a substantially horizontal baflie terminatingshort of one end of the boiler and defining the top of the fire-box, a cross-baffie rising from the inner end of the substantially horizontal bafiie and extending to the roof of the boiler, there being a flue-passage through the top portion of the upright baffle,

and upright baflles leading from opposite sides of the flue-passage above the substantially horizontal baffle and defining upright 15 flueassages; the roof having fine-openings for t e iipfight flue-passages.

In testimony whereof we have hereunto set our hands.

- J. ROWLAND BROWN.

KENNEDY PARK.

Witnesses:

JO N MILLER,

H. M. Conwm. 

